Scoop



1942- G. E. PENDLETON ,30

SCOOP Filed April 2, 1941 5 Sheets-Sheet l I 11 I'm tor 1942. 5. E.PENDLETON SCOOP Filed April 2, 1941 5 Sheets-Sheet 2 Inventor Nov.'10,1942. PENDLETON 2,301,641

SCOOP Filed April 2, l94l 5 Sheets-Sheet 3 Inventor Nov. 10, 1942. G,PENDLETON 2,301,641

SCOOP Filed April 2, 1941 5 Sheets-Sheet 4 Inventor GEO/VG 5 A. PzwouTa/Y (-1 Home Nov. 10, 1942. G. E. PENDLETON SCOOP Filed April 2, 1941 5Sheets-Sheet 5 I uventor GEO/P635 15 PAPA/P1 Era/v Patented Nov. 10,1942 UNITED STATES PATENT OFFICE SCOOP George E. Pendleton, Cloverdale,N. Mex.

Application April 2, 1941, Serial N0. 386,528 7 3 Claims.

This invention relates to a bulldozer type of scoop which may be easilyand quickly installed at the front end of a tractor to be pushed therebyfor loading and conveying material to a selected place, and has for theprimary object the provision of a device of this character which, to agreat extent, will be self-supporting and may be guided by the guidingof the tractor and has means whereby it may be unloaded from a carryingposition.

With these and other objects in view as will become more apparent as thedescription proceeds, the invention consists in certain novel featuresof construction, combination and arrangement of parts to be hereinaftermore fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawings, in which Figure 1is a side elevation illustrating a scoop constructed in accordance withmy invention and showing the same applied to the forward end of atractor.

Figure 2 is a top plan view illustrating the same.

Figure 3 is a sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a front elevation illustrating the device.

Figure 5 is a fragmentary top plan view, partly in section, illustratinga portion of the steering mechanism for the carriage of the scoopactuated by the tractor.

Figure 6 is a schematic diagram of the follower operating cable reeving.

Referring in detail to the drawings, the numeral 5 indicates a carriagewhich may be readily coupled onto the forward end of a tractor 6. Inthis instance the tractor 6 is of the caterpillar type. the endlesstraction treads being indicated by the character 1 and the mountingstherefor by the character 8. The carriage 5 includes side members 9which extend rearwardly to opposite sides of the mountings 8 and havetheir rear ends loosely journaled on the mountings 8, as

, shown at I0, whereby the side members 9 may move upwardly anddownwardly with a slight lateral movement toward and from the mountings8 of the tractor.

The side members 9 extend well forwardly of the L1 actor and aresupported by the latter and by ground wheels II in a horizontalposition. The ground wheels II are journaled on axles l2 secured to saidside members 9 slightly rearthe stub axle type including arms l3 towhich are pivoted tie rods l4 extending rearwardly to the tractor. Therear ends of the tie rods are pivotally connected to bell crank leversl5 which are pivotally mounted on the side members 9 and have pivotallyconnected thereto spring influenced plungers l6 slidably mounted in theside members and terminating in close proximity to the mountings 8 ofthe tractor and the latter are provided with offsets or bumpers IE to becontacted by the plungers. The springs of the plungers are indicated bythe character I! and bear against heads M of the plungers and the sidemembers 9. The springs l'l act to maintain the heads IS in ridingcontact with the bumpers IS.

The customary practice of steering a tractor of the type shown in thedrawings, is to operate the tractor tread 'I on the opposite side of thetractor in which the turn is to be made. For instance, if the tractor isto be turned to the right the left hand tractor tread will be set inoperation while the right hand tractor tread is non-driven. On theturning of the tractor to the right as specified the mounting of theright hand tractor tread exerts pressure upon the right hand plungercausing the right hand front wheel to be cut to the right, and at thesame time as the left hand tread 1 moves slightly away from the adjacentarm 9, the spring I! of the adjacent plunger will press the plungerinwardly and thus cause the bellcrank l5 to exert a pull on the link Mwhich causes the left hand front wheel to be cut to the right and thusthe two front wheels being cut to the right will cause the carriage toreverse operation, that is, the tractor tread on the right hand side isset in motion under power while the left hand tractor tread isnon-driven. The wheels of the carriage will then be cut to the left,directing the carriage to the left.

Upright members I9 are secured on the side members 9 adjacent to theforward ends thereof and are reinforced by braces 20. Operable betweenthe uprights l9 and pivotally mounted on the side members 9 rearwardlyof the ground wheels H is a scoop or bucket 2|. The forward end of thescoop or bucket is open and the bottom wall thereof at the forward endis tapered and inclined downwardly to form a scraper 22 which extends adistance beyond the sides of the scoop or bucket. The forward ends ofthe side walls of the bucket or scoop are arcuately curved and wardly ofthe forward ends thereof and are of 5 matching the curvature of saidforward edges of arms 23 pivotally mounted on the sides of the bucket orscoop, as shown at 25.

Operable within the body of the scoop or bucket is a follower 23connected to slide members 21 slidably mounted on the upper edges of theside walls of the bucket or scoop and on which are Joumaled pulleys 23.Pulleys 29 are mounted on the side walls of the scoop or bucket slightlyrearwardly of the forward edges thereof and are of the double type.Unloading cables 33 operating from a winch on the tractor are trainedover the pulleys 23 and then over the pulleys 23 and back over thepulleys 23 and over pulleys 3| mounted on the upper ends of the uprightsIS with the dead ends of the cables connected to the gate 23, as shownat 32.

Raising and lowering cables 33 operating from the winch on the tractorpass over pulleys 34 journaled on the uprights and over pulleys 33mounted on the sides of the bucket or scoop and have the dead endsthereof secured to the brackets which support the pulleys 33. The cables33 are employed for raising and lowering the scoop or bucket and whenthe latter is lowered by the cables 33 the scraping edge'22 contacts theground.

A cable 33 is connected to the follower 23 and passes over pulleys 31and is connected to a coil spring 33 located in a housing 39 mounted onthe bottom of the scoop or bucket. The coil spring 33 is adjustablyconnected to the housing whereby the tension thereof may be increasedand decreased.

when the cables 33 are first operated by the winch, they swing the gate23 upwardly to open the forward end of the scoop or bucket and onfurther movement of the cables 33 the pulleys 23 are moved toward thepulleys 23 causing the follower 26 to travel toward the forward end ofthe scoop or bucket for the purpose of removing material therefrom, thuspermitting the unloading of the bucket or scoop to take place when thelatter is in a horizontal carrying position. As the follower 23 movesforwardly it increases the tension of the spring 33 so that when thecables 33 are returned to normal position, the spring 33 acts to restorethe follower 26 to the rearward end of the scoop or bucket.

It is to be understood that the gate will be kept in an open positionduring the time that the scoop or bucket is lowered for the purpose ofloading with material by the forward motion of the device by thetractor.

In order that the gate 23 be held open the cables 33 are kept taut bythe winch after the follower 23 has returned to a rearward positionwithin the scoop or bucket.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of the invention as claimed.

Having (thus described the invention, what I claim is: I

1. In a device of the class described, a frame having an upstandingsupport, a scoop open at its front end and pivoted at its rear end tothe frame, a door pivoted to the scoop for closin its front end, afollower in the scoop movable toward and away from the open end, meansfor raising and lowering the front end of the scoop. a pulley on thesupport above the scoop, a pair of pulleys on the upper portion of thescoop adjacent its front edge, a pulley carried by the follower, and acable having one end attached to the door and trained over thefirst-named pulley, under one of the second-named pulleys, around thethird-named pulley and then extended around the other of saidsecond-named pulleys with the other end of the cable extended rearwardlyfor actuation thereof, said cable initially raising the door andsubsequently moving the follower forwardly, and spring-actuated meansreturning the follower to its original position.

2. In a device of the class described, a frame having an upstandingsupport, a scoop open at its front end and pivoted at its rear end tothe frame, a door pivoted to the scoop for closing its front end, afollower in the scoop movable toward and away from the open end, meansfor raising and lowering the front end of the scoop, a pulley on thesupport above the scoop, a pair of pulleys on the upper portion of thescoop adjacent its front edge, a pulley carried by the follower, and acable having one end attached to the door and trained over thefirst-named pulley, under one of the second-named pulleys, around thethird-named pulley and again extended around the other of saidsecond-named pulleys with the other end of the cable extended rearwardlyfor actuation thereof, said cable initially raising the door andsubsequently moving the follower forwardly, and spring-actuated meansreturning the follower to its original position, said second-namedpulleys being adapted to accelerate opening movement of the door upon alowering movement of the scoop.

3. In a device of the class described, a frame having an upstandingsupport, a scoop open at its front end and pivoted at its rear end tothe frame, a door pivoted to the scoop and gravity actuated for closingits front end, a follower in the scoop movable toward and away from theopen end, means for raising and lowering the front end of the scoop, apulley on the support above the scoop, a pair of pulleys on the upperportion of the scoop adjacent its front edge, a pulley carried by thefollower, and a cable having one end attached to the door and trainedover the pulleys in a manner adapted to initially raise the door and tosubsequently move the follower forwardly and spring-actuated meansreturning the follower to its original position.

GEORGE E. PENDLETON.

